Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cau thuc » cau truc, cuu thuc, cau phuc
can thuc » dan thuc, van thuc, cay thuc
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang xa hoi. lieu va ((cau thuc) or (can thuc)) va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang xa hoi. lieu va ((cau thuc) OR (can thuc)) va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. lieu va ((cau thuc) or (can thuc)) va hanh vi cua tre*.